These magnets do hold together very well. Read the package though, they're brittle and can shatter like glass if abused. Slide them apart and don't drop them and they should work well for whatever unique use you find for them.
Pros: Sturdy, Good Size & Weight, Nice Design
4out of4found this review helpful.
Review 2 for 3/4 in. Neodymium Rare-Earth Magnet Discs (3-Pack)